Backport of "log: Add as_ptr() and Hash to DebugCategory" into 0.23
requested to merge gstreamer-backport-bot/gstreamer-rs:mr-1612-backport-into-0.23-debugcategory-ptr-and-hash into 0.23
Backport of !1612 (merged) "log: Add as_ptr() and Hash to DebugCategory".
Commits:
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a0de8269
log: Add as_ptr() and Hash to DebugCategory